Ultrasonic cleaners are pre-sterilization devices used to effectively remove debris, blood, tissue, and other contaminants from medical and dental instruments before disinfection or sterilization. They work by generating high-frequency sound waves (ultrasound) through a liquid bath. These sound waves create millions of microscopic bubbles that rapidly form and collapse (a process called cavitation). This implosion generates powerful scrubbing action that dislodges even microscopic particles from intricate surfaces, crevices, and hinges of instruments. Ultrasonic cleaning is superior to manual scrubbing for complex instruments, reducing staff exposure to sharps and ensuring a thorough clean that is essential for effective subsequent sterilization. It is an indispensable step in instrument reprocessing protocols, significantly enhancing the safety and efficacy of medical procedures by ensuring instruments are meticulously cleaned.